Critics of President Trump have repeatedly warned of his potential to undermine American democracy. Among the concerns are his repeated assertions that he would have won the popular vote had 3 to 5 million “illegals” not voted in the 2016 election, a claim echoed by the head of a White House advisory committee on voter fraud.

Claims of large-scale voter fraud are not true, but that has not stopped a substantial number of Republicans from believing them. But how far would Republicans be willing to follow the president to stop what they perceive as rampant fraud? Our recent survey suggests that the answer is quite far:

Nearly half of Republicans (47 percent) believe that Trump won the popular vote, which is similar to this finding. Larger fractions believe that millions of illegal immigrants voted (68 percent) and that voter fraud happens somewhat or very often (73 percent). Again, this is similar to previous polls.

Moreover, 52 percent said that they would support postponing the 2020 election, and 56 percent said they would do so if both Trump and Republicans in Congress were behind this.